Kevlar纤维及碳纤维背衬下SiC陶瓷和弹丸的破碎特性  

Crushing Characteristics of SiC Ceramics and Projectiles under Kevlar/Carbon Fiber Backing

作　　者：马铭辉 武一丁 王晓东 余毅磊 周玄 高光发[1] 褚庆国 MA Minghui;WU Yiding;WANG Xiaodong;YU Yilei;ZHOU Xuan;GAO Guangfa;CHU Qingguo(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China;Unit 63963 of the Chinese People’s Liberation Army,Beijing 100072,China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094 [2]中国人民解放军63963部队,北京100072

出　　处：《高压物理学报》2023年第6期117-125,共9页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(12172179,11772160,11472008)。

摘　　要：陶瓷/纤维复合装甲的抗弹性能与弹靶的破碎特性之间有明显的关联。当背板材料不同时,波阻抗差异会影响陶瓷与背板之间的应力波传播,使弹丸和陶瓷面板产生不同的破碎现象,致使复合靶板的防护性能有所不同。针对弹丸侵彻不同纤维背板的陶瓷复合装甲时的弹靶破碎特性,开展了12.7 mm口径的穿燃弹侵彻陶瓷/Kevlar纤维复合靶板和陶瓷/碳纤维复合靶板的弹道试验,结合Rosin-Rammer分布模型,对两类陶瓷/纤维复合靶板的防护性能进行分析。结果表明:弹芯撞击陶瓷面板时发生的断裂主要由其内部的拉剪应力造成;当背板为碳纤维时,弹芯碎片的平均特征尺寸比背板为Kevlar纤维时小21.68%,陶瓷碎片的平均特征尺寸减小约9.48%,即弹芯和陶瓷的小尺寸碎片占比更大,同时,复合靶板的整体抗弹性能更优。There is a clear correlation between the ballistic performance of ceramic/fiber composite armor and the fragmentation characteristics of the projectile and target.When the back-plate material is different,the difference in wave impedance will cause differences in stress wave transmission between the ceramic and back-plate interface,resulting in different fragmentation outcomes of the projectile and ceramic panel,leading to differences in the protective performance of the composite target.For the differences in the fragmentation characteristics of the projectile and target,when the projectile penetrates different fiber back-plate ceramic composite armors,ballistic tests of 12.7 mm armor-piercing incendiary projectile penetration of ceramic/Kevlar fiber composite targets and ceramic/carbon fiber composite targets were carried out,and the protective performance of the two types of ceramic/fiber composite targets was analyzed in conjunction with the test results and the Rosin-Rammer distribution model.The results show that the fracture of the bullet core is mainly caused by the internal shear stress.When the back-plate material is carbon fiber,the average characteristic size of the bullet core fragments is reduced by 21.68%compared with Kevlar fiber,and the average characteristic size of the ceramic fragments is reduced by about 9.48%,that is,the proportion of small-sized fragments of the bullet core and ceramics is larger,and at the same time,the overall ballistic performance of the composite target is better.

关 键 词：陶瓷/纤维复合装甲 破碎特性 穿燃弹 抗弹性能 

分 类 号：O382.1[理学—流体力学] O385[理学—力学]